Question # 1

The rate of a reaction can be increased in general by all the factors except by

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Using a catalyst

Increasing temperature

Increasing the activation energy

Increasing the conc. of reactants

Which one of the following has the lowest boiling point?

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B

AI

Ga

Ti

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

The rate of a reaction that does not involve gases does not depend upon

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Pressure

Temperature

Concentration

Catalyst

Causticisation process is used for the preparation of

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Caustic soda

Caustic potash

Baryata solution

Slaked lime

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

Natural fertilizer provides potassium in the form of K₂O (potash)

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1.5 kg

3 kg

4.5 kg

6.5 kg

Galena is an ore of

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Gallium

Lead

Tin

Germanium

The number of atoms contained in 11.2 L of SO₂ at S.T.P are

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3/2 x 6.02 x 10²³

2 x 6.02 x 10²³

6.02 x 10²³

4 x 6.02 x 10²³

Which of the following will not change the concentration of ammonia in the equilibrium N₂(g) + 3H₂(g) 2NH₃(g): ΔH = -kj

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Increase of pressure

Increase of temperature

Decrease of volume

Addition of catalyst

Which of the following process is used to separate insoluble particles from liquids?

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Separation

Filtration

Crystallization

Condensation

The molal elevation constant is the ratio of the elevation in boiling point to

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Mojarity

Molality

Mole fraction of solute

Mole fraction of solvent

The maximum number of electrons in a subshell for whichι = 3 is

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14

10

8

4

Which has largest first ionization energy?

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Li

Na

K

Rb

Which of the following is not present in RNA?

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Uracil

Thymine

Ribose

Phosphate

Red P can be obtained from white P by

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Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Dissolving it in CS₂and crystallzing

Melting it and pouring the liquid into water

Bell metal is an alloy of

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Cu, Zn and Sn

Cu, Zn and Ni

Cu and Zn

Cu and Sn

Number of elements present in the fifth period of periodic table is

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8

10

18

32

Maximum number of active hydrogens

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Acetic acid

Glycerol

Methane

Methanol

Which of the following alkali metal hydroxides is the strongest base?

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LiOH

NaOH

KOH

CsOH

Acetic anhydride is obtained from acetyl chloride by the reaction of

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P₂O₅

H₂SO₄

CH₃COONa

CH₃COCH₃

Which of the following metal exhibits more than one oxidation?

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Na

Mg

Fe

Al

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